The dark blue 7x50 H2O Porro Prism Binoculars are outfitted with a suite of optical and design elements that make them ideal optics for a variety of glassing applications. For jobs on and around water, they feature waterproof seals, slip-resistant armor, a wide exit pupil, and long eye relief. For astronomers who like to view the moon, hunt for comets, or enjoy wide-field viewing of planets, the large objectives gather buckets of light while the exit pupil is wide enough to still cover fully dilated pupils in total darkness. Birders will appreciate the Porro prism optical path and anti-reflection multicoatings that ensure crisp and clear views with accurate color representation that will allow positive identification of elusive species.